Turret-lathe.



B. M. W. HANSN.

TUBBBT LATHE.

APPLICATION FILED nu 11, 1905.

921,984. Patented May 18, 1909.

5 SHEETS-SHEET 1.

B. M. W. HANSON.

TURRBT LA'I'HE.

APPLIoAfrIoN FILED 11m11.190s.

921 ,984. Patented May 18, 1909.

5 SHEETS-SHEET 2.

B. M. W. HANSON.

TURRET LATHB.

Patlltd May 18, 1909.

s sums-SHEET 4.

B. M. W. HANSON.

TURRBT LA'IHE.

APPLICATION FILED MAY 11, 1905.

Wai/fesses.-

B. M. W. HANSON.

lTUBBET LTHB. APPLIOATION FILED un 11, 1905.

921 ,984. Patented May 18, 1909.

5 SHEETS-SHEET E.

UNlTED STATES PATENT OFFCF.

BENGT M. W. HANSON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO PRATT d: WHITNEY COMPANY, OF HARTFORD, CONNECTICUT, A

CORPORATION OF NEW JERSEY.

TURBE T-LATHE Speoieatio of Letters Patent. l

Patented Hay 1B, 1909.

To all 'whom 'it my concern:

Be it known that I, BENGT M. W. HANsoN, a citizen of Sweden, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Turret-Lathes, of which the fol owing is a specification.

This invention relates to lathes ef that class in which an intermittingly rotating tool-carrier is employed, said lathes being known technically as turret-lathes.

In the preferred embodiment of the invention the tool-carrier comprises a flat, disklike plate of pol gonal shape-shown as hexagonal-from tlie various angles of which rise a series of airs of short standards, the inner walls of which are parallel to the axis of the carrier, and alined pairs of which, are when the carrier is indexed to bring a tool into position, parallel to the axis of the chuck-s indle,-the space between each pair of stan ards constituting a seat for the reception of a tool-holder, as will be hereinafter ex lained.

rimarily the object of the invention is the provision of a tool-carrier of improved construction.

A further object of the invention is the revision with the improved carrier of toollocks or holders of peculiar construction.

A further object of the invention is the provision of improved devices for holding the tool-carrier in place on the cross-slide of the machine. 4

Other ob'ects of the invention will be hereinafter set forth.

In the accompanying drawings, Figure 1 is a plan view of a machine showing m invention a plied thereto. Fig. 2 is a si e elevation o the carriage and indexing and locking devices, parts being illustrated b dotted hnes. Fig. 3 is a plan view, partia y in section and dotted lines of the carriage, and the improved tool-carrier. Fig. 4 is a plan view of the parts employed for indexing the toolcarricr. Fig. 5 is Va side elevation of the parts illustrated in Fig. 4. Figs. 6 and 7 are respectively, plan and edge views ofthe toolcarrier, each fi ure showing the improved tool-block or ho der. Fig. S is a view similar to Fig. 7, and illustrating a peculiar kind of tool. Fig. 9 is a longitudinal, vertical sec- 1; and Fig. 10 is a preferred form of tion on line x-x of Fi pers ctive view of t e toololder.

Like numerals designate similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates the shears of a machine-frame,2 a tail-stock adjustable longitudinally thereof, 3 the usual dead-center, 4, the head-stock, 5 the belt-cone, 6 the chuck-spindle, 7, the chuck, and '8 the carriage, all of which may be of any desired shape and construction. On the carriage is fitted a cross-slide 9 actuated by usual means, for instance, a screw and nut (not shown), operated by a handwheel 10.

Designated by 12 is the improved tool-carrier shown of flat, polygonal shape, although it may be of any form desired Without departure from the invention. Rising from the top of the carrier at spaced intervals are short standards 13, between each pair of which a seat 14 is formed for the reception of a tool-holder hereinafter described. Substantiall triangular lugs or bosses 15 are provide at intervals on the top1 of the carrier and each has an internall -t readed seat 15' for a u ose hereinafter described.

Any suitab e forms of tool-holders may be located in the sea-ts 14 between the standards 13, and tools ofan re uired kind may be carried by said too -hol ture from the invention.' A preferred form of tool-holder is, however, illustrated in Figs. 6, 7 and 10,` and it consists of a block 16, perforated at 17 to receive a tool-shank 18 secured in place by screws 19,-'saidblock being grooved or recessed on its under side at 20 to form bearingurfaces 2l, which rest upon like surfaces or ways 22 separated by a recess 23 in the top of the carrier between each pair of standards 13. (See dotted lines Fig. 7, and Fig. 101. By thus ooving the engaging surfaces of the toolelders and seats the nccessitv of planin the entire bottoms of the tool-holders an of the seats on the carrier is receptacle is formed by said recesses for dirt etc., which might otherwise interfere with the proper seating of the tool-holders. On its upper surface each tool-holder is Banged at its ou :er end at 16, the flange constituting avoided, and a ers without `depar the entire tops upon the adjacent sides of two tool-holders by bolts 25 entering the threaded seats 15', as shown in Figs. 6 and 7 .0 t

Pins 26, coperatmg with a locking-slide hereinafter described, are disposed at intervals apart on, and. depend from, the tool-carrier, and these ins are secured to said carrier by screws 27, t 1e heads of which are received in countersinks 28, as shown by dotted lines in Fi 2. Indexing-pins 29 also depend from t e tool-carrier, as illustrated by dotted lines in Fig. 3, and by full lines in Fig.'4.

To secure the tool-carrier in place on the cross-slide 9 any means may be em ioyed, but shown for this purpose are pecu iar devices now to be described.

Referring to Fig. 9 the numeral 30 represents an angular head havin an integral shank 31, formed with a conica part 31 and a reduced stem 31, threaded toreceive a nut 32, saidv stem being inserted-in a bore 33 of the cross-slide 9, and said nut be'arin against a shoulder 33 formed on the c`ross-s ide. A A

. conical seat is formed in the tool-carrier 12 for the reception of the corresponding part of the shank and between'the head 30 and the top of said tool carrier is a washer 34 having a vertical flange 34 closely embracing the lower end of said head. Extending longitudinal] f of the head are bores' 35 in which are place rods or long pins 36, the lower ends ofA which rest upon the washer 34, and the u )per extremities of which extend slightly a ove the top of the head. Projecting from the top of the head at about its central portion is a stem 37 thread ed for a ortion of its length, and upon the unthreaded)part of said stem is splined a cap 38 which rests upon the upper ends of the' ins-36. A lever-nut 39 having a handle 39 1s threaded upon the stem above the cap, and by adjusting said nut the cap 38 may be forced agalnst the pins 36, and as the latter bear against the washer 34 this action will result in clamping the head rigidly in lace on the cross-slide the conical part 31 orming a bearing upon which the tool-carrier is indexed, and t e head being prevented from rotation by a kev 40 of stem 31 entering a groove in the wall of the bore 33. Adjacent to its base portion the head is provided with a bore 41l of area sufficient to receive the largest size of standard stock Within the ca acit of the machine, said bore bein locate in t e head on a line coinciding wit the axis of the chuck-spindle and of the deadcenter as illustrated 1n Fig. 1, in which a stock-bar 42 is shown passing through said bore., integral with the cross-slide is a grooved extension 43, and in said extension is mounted a sliding-rod 44. Adjustably sccured to the bed, and movable upon the shears thereof, is aslide45,havin a lateral] extending abutment 46 inte ra therewit said abutment being groove at 46 to receive the end\of the rod 44, and extending laterally far enough to always receive the impact of the rod, no matter what may bethe adjustment of the cross-slide.

Rigid with the inner end of rod 44 is a head 47 having an inclined cam 48, and in the chamber of the cross-slide is an angle-lever 49 rigid with a short shaft 50, said'angle lever having a stud or pin 51 in one of its arms bearing against the cam 48. Secured at one end to the shaft 50 and at its other end to the slide is a torsion-sprin 52, the tendency of which is to hold the pm 51 against the cam 48. A slot 53 in thehead47 permits the roclring of said angle-lever under the stress of spring 52 after the pin passes off the end of t e cam. In the other arm of the angle-lever is a in 54 which bears against a lug 55 deen ing from a locking-bolt or slide 56, the atter being notched at 'its inner end at 56 to enga e the pins 26.V In the body of the loc olt is a slot 56* in which is fitted a guide-l lock 56s of the cross-slide. Rigid with the head 47, and extendin inward therefrom, is abroad flange or shel 57, upon which is ivoted at 58, an arm car g at its inner en a dog 59, grooved on its ace to engage the indexing-pins 29. Extending from thls flange or shel is a spindle 60 having a collar 61, 'and surrounding said s indle is a coiled spring 62, one end of w ich bears against said collar and the other extremity against a screw 63, asillustrated, in Figs. 2 and 3. Projecting from the lugs 55 of the locking-bolt is a plunger 64, reduced and collared at 64 to receive one end of a coiled spring 65, ythe other end of said spring bearin against a screw 66, as illustrated in Fig. 3.

. ormally the locking-boltis in en agement with one of the pins 26, and it is, t erefore, necessary to withdraw it before the tool-carrier can be indexed. As the carriage 8 moves rearward the rod 44 will move with it until arrested by the abutment 46, and as said carriage continues its rearward movement, the rod 44 is held stationary, and the pin 51 rides up the inclined cam 48 and rocks the an le-lever 49, thereby causing the pin 54 of sai( lever to en a e the lug 55and withdraw the locking-o t 56, said bolt bein held in its withdrawn. position until the too carrier is indexed by the engagement of one of its pins 29 with the dog 59. After the pin 51 leaves the cam 48 it enters the slot 53 of izc head 47, and the spring shoots the bolt forward to cause it to again lock the toolcarrier.

While particular locking and indexing mechanism is shownand described it is distinctly to be understood that the invention is not limited thereto,'for any suitable devices may be substituted desired.

Any desired tool may be employed with the im roved tool-holding blocks 16, and in Fig. 8 have shown what is known as a universal turning-tool designated in a feneral wa 'by 67, as carried by one of said locks. This tool is rovided with a back-rest 68 and with suitab e stop and adjusting devices 69, and the illustration is for the purpose of showing how the blocks are adapted to receive any peculiar kind of appliance useful with the machine.

As will be seen the tool-holders or blocks fill their seats, are strong and rigid, and can not be deiiected or broken under strain due to the stress of the work upon the tool, and as said blocks fit snugly between the standards 13 they are held 1n fixed position, with no possibility of lateral movement. n

Changes may be made in the various details of the machine, and in their form and proportions, without departure `from thelinvention, which is not limited to the exact devices shown and described.

Having thus described my invention, what I claim isl. The combination vfith a carrier having seats With parallel walls, of rectangular toolholding blocksiitted in the seats, and supported laterally by the walls thereof; and means for securing said tool-holding'blocks in place.

2. A rectangular tool-holding block coinbined with a carrier having a rectangular seat open at its end, and shaped to receive and-incluse a block on its bottom and sides,

and means for clamping the block in its seat,

said means overla pinggthe top of the block adjacent to the e ges t ereof.

3. carrier having pairs of standards; a plurality of tool-holding blocks insertedone etween the standards of each pair; plates ondthe carrier between the pairs of standar s; a ainst the tool adjacent the tool-holding b ocks.

4. The combination, with a carrier havin pairs of separated standards, each lo'cate parallel to the axis of rotation ofthe carrier, of tool-holders mounted between the standards; plates on the carrier bet'aeen each air of opposing standards and means for fbrcin each plate against two of said tool-4 ho ders.

5. 'The combination, with a rotatable car# rier, of standards; tool-holders located in the for those illustrated, if

and means for forcing the plates,

assages between the standards; a plate having double clam ing surfaces; and means for securing said p ate to a part of the carrier between two standards, and for forcing it upon the tops of a pair of tool-holders.

6. The combination, v. ith a slide of a cross-slide; a turret carried by said crossslide; indexing-devices; means for actuating said indexing-devices; and an abutment carried by the frame, and with which said means will enga e on the return of the slide at any point o adjustment of the crossslide.

7. The combination, ith a rotatable carrier having-pairs of separated standards, of rectangular blocks, each block having a socket for the reception of a tool-shank, and also having a Hangs on its outer end; and means for clamping said blocks in place.

8. The comblnation, viith a inachine-bed having Ways, of a slide mounted for longitudinal movement u on said ways; a crossslide carried by the t-mentioned slide; a turret mounted for intermittent rotation on the cross-slide; means for indexing the turret; a rod for actuating the indexing-means; an abutment with which the end of said rod ma engage in any position of the crosssli e and a support' for said abutment on said Ways.

9. The combination, with a machine-bed having Ways, of a slidel mounted for longitudinal movement u on said `says' a crossslide carried b the rst mentione slide; a turret mounte for intermittent rotation on the cross-slide; means for indexing the turret; a rod for actuating the indexing means; a grooved abutment, with which the end of said rod may engage in any osition of the cross-slide; and an adjustab e support for said grooved abutment.

10. The combination, with a carrier, of a head having longitudinal perforations, and a bearing uponwhich said carrier is mounted; rods in the lon 'tudinal perforations; a WasherJbetWeen te lower ends of the rods and the carrier; and meansv for applying pressure to said rods. 11. The combination, with a carrier having an axial opening, of a perforated head provided with a stein havin a bearing for said'carrier; means for securing the head in place; a flanged washer on which the base of the headis seated;` rods in the perforations of the head, and bearing against said washer;

splined to an extension of the head; and a means carried by the bosses for forcing each 10 nut threaded on said extenslon, and bearing clampingplate agamst two toolcarrying against the cap. blocks.

13. The combination, Witha. rotatable tool- In testimony whereof I affix'my signature carrier having triangular bosses, the sides of in presence of two witnesses. which serve as standards and are located BENGT M. W. HANSON. parallel to the axis of rotation of the carrier, Witnesses: of tool-carryin blocks mounted in the seats H. E. BAILEY, formed by saic bosses; clamping-plates; and S. E. DAVIS. 

